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Evrimata: Journal of Mechanical Engineering
Published by PT. ELSHAD TECHNOLOGY INDONESIA
ISSN : -     EISSN : 30476305     DOI : https://doi.org/10.70822/evrmata.vi
Core Subject : Science, Engineering,
Automotive Engineering Materials Science & Nanotechnology Mechanical Engineering
Evrimata: Journal of Mechanical Engineering The interdisciplinary research edition covering scientific areas: - Mechanical Engineering - Otomotive Engineering - Material Engineering Taking into account the interdisciplinary character of the journal, the authors in its materials should emphasize field of application of their research, always emphasizing the importance of the subject for the research community in related fields of knowledge. For example: - If the article deals with the new inorganic materials then should be pointed as such materials may be used by specialists in the field of energy, electronics, etc., or how understanding the mechanism of the processes can be taken into account in the synthesis of other new materials. - If the article is about new methods of mathematical modeling, it should specify what restrictions may apply specifics of field of application to the proposed original method (accounting of external factors, the initial or boundary conditions, internal factors that can not be an accurate accounting and so on). Therefore, when submitting the articles in this section, are welcome articles, co-authors of which are experts in different fields of knowledge.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 5 Documents
 1 
Search results for , issue "Vol. 02 No. 03, 2025" : 5 Documents clear
The Effect of Variations in Coil Types and Ignition Degree Mapping Using A Programmable CDI on Power in A 110 CC Gasoline Motorcycle Rizki, Aprilian; hadi susilo, sugeng
Evrimata: Journal of Mechanical Engineering Vol. 02 No. 03, 2025
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.107

Abstract

In the automotive world, power reduction in long-used motorcycles is a common issue that can affect vehicle performance. Over time, engine components experience wear and decreased efficiency, leading to reduced power output. One solution to address this problem is optimizing ignition settings by upgrading the CDI (Capacitor Discharge Ignition) and replacing the standard coil with an aftermarket coil. Upgrading the CDI and replacing the standard coil with an aftermarket one aim to improve engine power, as the standard CDI has a relatively low output and the standard coil has a limited output capacity. Therefore, the coil must match the output capacity of the upgraded CDI. This study aims to enhance the performance of a 110cc four-stroke engine. The study method used is a quantitative experimental approach, and data processing is carried out using two-way ANOVA analysis of the test results, processed in Microsoft Excel, with the average results taken from three trials per variation. The independent variables in this study are the racing coil with a voltage greater than the standard (up to 90 kV) and ignition timing mapping with a programmable CDI, while the dependent variable is power. The results of the study show that the ignition timing set at 13 degrees and the use of the BRT coil provided the highest power output, reaching 8.33 horsepower at 8000 rpm. This outcome is due to the critical role of ignition timing in controlling fuel combustion in the combustion chamber, where an earlier explosion with a larger spark results in higher power output
Design and Performance Testing of a Battery Management System (BMS) for Electric Quadcopter Vehicles: Efficiency and Safety of LiFePO4 Batteries Anis Roisyatin, Umi; Al Kahvi, Mochammad Bilal
Evrimata: Journal of Mechanical Engineering Vol. 02 No. 03, 2025
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.108

Abstract

The quadcopter Flying Electric Vehicle (KLT) is an emerging technology that has great potential for various applications. The battery is one of the important components in the quadcopter KLT, and the Battery Management System (BMS) plays an important role in maintaining the performance, safety, and life of the battery. This study aims to determine the wiring design and test the performance of the BMS on a quadcopter flying electric vehicle. The study uses a quantitative approach with a descriptive type. By designing a Battery Management System (BMS) for flying electric vehicles and then testing the BMS to find out its effect on the performance of electric motors and safety on batteries. Then after the battery design process and testing, a BMS monitor display will be obtained during standby mode and work mode. The test results, namely when the battery management system is on standby, open throttle BLDC 25%,50%,75%,100% and open start throttle show that the battery is in good condition and has sufficient capacity. The battery voltage is within the normal range, the battery current does not flow, the battery power is not used, the average cell voltage is normal, and the remaining battery capacity is almost full. Jikong's BMS is functioning properly and the battery is in good condition. The planning of the battery management system (BMS) on the quadcopter flying electric vehicle was successfully made with adjustments to the Battery LifePo4 used
The Effect of Polysorbate and Lecithin Surfactants in Cooking Oil Lubricants on Engine Temperature and Power Aditya, Rifqi; Puspito, Haris
Evrimata: Journal of Mechanical Engineering Vol. 02 No. 03, 2025
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.110

Abstract

Lubricating oil was one of the important things needed by the engine. Large temperature changes in the viscosity of lubricating oil would reduce the lubrication of engine parts, increase friction between metals, and cause engine parts to heat up quickly. Efforts to control this was by replacing mineral-based lubricating oils with environmentally friendly and biodegradable lubricating oil materials. The purpose of this study was to determine the effect of using a mixture of cooking oil and surfactants Polysorbate and Lecithin (2.5%, 5%, and 7.5%) as engine lubricants on the power and temperature produced by motorized vehicles. This research was quantitative experimental research. The dependent variables of this study were engine temperature and power. The control variables were a testing at room temperature, 4 stroke 125CC matic vehicle, and raw material using palm cooking oil. The test method used infrared thermo gun and Dyno test. The best result in this study was a mixture of cooking oil and Polysorbate 7.5%. It produced an average value of 2.98 HP at 6000 RPM engine speed, an average value of 7.02 HP at 7000 RPM engine speed, an average value of 6.99 HP at 8000 RPM engine speed, and an average value of 6.50 HP at 9000 RPM engine speed, with an average temperature value of 90.1ºC in which the temperature measurement results were still below the average value of oil temperature with a difference of 6.5ºC.
Assembly of BLDC Motor Control Configuration in Electric Aircraft Syamsi, Muhammad; Hadi Susilo, Sugeng
Evrimata: Journal of Mechanical Engineering Vol. 02 No. 03, 2025
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.113

Abstract

The movement and stability of a quadcopter is very dependent on the speed of the propellers which are controlled by the BLDC motor. Each propeller produces thrust and torque that is regulated to rotate clockwise (CW) and counter clockwise (CCW). It is important to maintain the balance of the quadcopter, flying electric vehicles such as quadcopters face challenges in the control system, especially in the BLDC motor. Therefore, the program configuration on the quadcopter controller is very important so that the quadcopter can fly stably as desired by controlling the rotation of the BLDC motor and utilizing sensors to support flight stability. DJI NAZA M V2 is a good flight controller in the quadcopter category, mainly because of its advanced control algorithm and stability features. This advantage allows users to have a stable and safe flight even in unfavorable weather conditions. The application of BLDC motor control program configuration to flying electric vehicles, especially quadcopters, shows that the configuration of the flight controller and electronic speed control has a significant impact on overall performance. Configuration includes basic settings such as mixer type, battery, throttle, reverse, timing degree, brake, power, and helicopter mode. The right combination of settings can make the quadcopter operate optimally and stably in various conditions.
Failure Analysis of Spinning Roll Shaft in Cone Plate Formation Using Finite Element Method (FEM) arif nur huda, Muhammad; Zuhria Kautzar, Galuh; Yudiyanto, Eko
Evrimata: Journal of Mechanical Engineering Vol. 02 No. 03, 2025
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/evrmata.vi.114

Abstract

This study of the failure of spinning roll shafts used in cone plate formation, caused by uneven stress distribution due to suboptimal geometric design. The aim of this research is to analyze the root causes of shaft failure and optimize its design using Finite Element Method (FEM). The method employed involves simulating the spinning roll shaft with various geometric dimensions, such as diameter and fillet radius, to evaluate stress distribution and identify potential failure points. The results indicate that maximum stress occurs at the shaft diameter transition and fillet radius areas, leading to stress concentration, which can cause premature failure. Design improvements, such as increasing the fillet radius and enlarging the transition diameter, significantly reduced maximum stress and enhanced the shaft's safety factor. In conclusion, the research demonstrates that shaft failure is primarily caused by geometric design flaws resulting in excessive stress concentration rather than material quality. Modifying the geometry, especially the fillet radius and diameter transition, can improve the reliability and lifespan of the shaft, thereby reducing the risk of failure in cone plate spinning processes.

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